EP4260427A1 - Charging circuit and method for charging an electrical energy store, and electric vehicle - Google Patents
Charging circuit and method for charging an electrical energy store, and electric vehicleInfo
- Publication number
- EP4260427A1 EP4260427A1 EP21819100.5A EP21819100A EP4260427A1 EP 4260427 A1 EP4260427 A1 EP 4260427A1 EP 21819100 A EP21819100 A EP 21819100A EP 4260427 A1 EP4260427 A1 EP 4260427A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrical
- energy store
- voltage
- charging
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 13
- 238000004146 energy storage Methods 0.000 description 15
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Definitions
- the present invention relates to a charging circuit for charging an electrical energy store and an electric vehicle with such a charging circuit.
- the present invention also relates to a method for charging an electrical energy store.
- Fully or at least partially electrically powered vehicles have an electrical energy store, such as a traction battery.
- This electrical energy store can be charged from an external energy source using a suitable charging device.
- the electrical energy is provided in the form of a DC voltage.
- the direct voltage provided can correspond to the voltage level of the electrical energy store to be charged.
- Typical DC voltage charging infrastructures are currently designed for a maximum end-of-charge voltage of around 500 V.
- the charging current is usually regulated by the charging infrastructure during the charging process.
- the publication DE 10 2017 123 184 A1 describes a device and a method for charging an electrical energy storage system with a first energy storage bank and a second energy storage bank.
- a charging voltage that is present corresponds to the nominal voltage of the energy storage banks.
- the individual energy storage banks are connected in parallel for charging. Disclosure of Invention
- the present invention creates a charging circuit and a method for charging an electrical energy store and an electric vehicle with the features of the independent patent claims. Further advantageous embodiments are the subject matter of the dependent patent claims.
- a charging circuit for charging an electrical energy storage device with an input connection, a first output connection and a second output connection and a DC/DC converter.
- the input terminal is designed to be connected to a DC electrical voltage source.
- the first output connection is designed to be connected to a first part of the energy store.
- the second output connection is designed to be connected to a second part of the energy store.
- the DC-DC converter is electrically connected to the input terminal of the charging circuit at an input of the DC-DC converter.
- the DC voltage converter is electrically connected at an output of the DC voltage converter to the second output connection of the charging circuit.
- the input terminal of the charging circuit is electrically connected directly to the first output terminal of the charging circuit.
- the electrical energy store includes a first connection point, a second connection point and a center connection. A first part of the electrical energy store is electrically connected to the first connection point and the center connection. A second part of the electrical energy store is electrically connected to the second connection point and the center connection.
- a method for charging an electrical energy storage device with a step for directly electrically connecting an input connection of a charging circuit to a first part of the electrical energy storage device. Furthermore, the method includes a step for converting an electrical voltage at the input connection of the charging circuit into a further electrical voltage and a step for providing the further electrical voltage to a second part of the electrical energy store.
- the present invention is based on the knowledge that a nominal voltage of electrical energy stores in electric vehicles can exceed a maximum charging voltage of conventional charging stations.
- a charging circuit In order to be able to charge such electrical energy stores at conventional charging stations, a charging circuit must therefore be provided which enables the electrical energy stores to be charged with a high nominal voltage.
- Such charging circuits are usually relatively complex and cause significant costs.
- electrical losses also occur during DC voltage conversion, as a result of which the efficiency for charging the energy store is reduced.
- the charging voltage used being a direct electrical voltage whose voltage level is below the nominal voltage of the electrical energy storage device.
- the remaining part of the electrical energy store is supplied with electrical energy via a DC converter, the DC converter also being fed by the charging station. In this way, the first part of the electrical energy store can be fed directly from the charging station, without further losses occurring within the charging circuit.
- the DC-DC converter adapts the electrical charging voltage for the remaining part of the electrical energy store in accordance with the voltage conditions for charging the electrical energy store. In this way, the sum of the voltage provided by the charging station and the additional electrical voltage provided by the DC-DC converter can provide an electrical voltage which is also suitable for charging electrical energy storage devices whose final voltage is above the charging voltage from the charging station lies.
- the electrical losses of the DC-DC converter are lower than with a charging circuit in which the charging voltage for the electrical energy store is provided entirely via the DC-DC converter. The overall efficiency for charging the electrical energy store can thus be increased.
- the DC voltage converter can be dimensioned correspondingly smaller.
- a connection point of the first output connection and a connection point of the second output connection are electrically connected to one another.
- This node which is formed by the connection point of the first output connection and the connection point of the second output connection, which are connected to one another, can be connected to a center connection of the electrical energy store.
- the remaining connection points of the two output connections of the charging circuit can be connected accordingly to the external connections of the electrical energy store.
- an electrical energy store with a center connection can be contacted and charged by means of the charging circuit.
- the DC-DC converter is designed to separate the input of the DC-DC converter from the output of the to galvanically separate the DC-DC converter.
- the galvanic separation can take place, for example, by means of an appropriate transformer or the like.
- the DC voltage converter provides a potential-free electrical DC voltage at the output.
- the charging circuit comprises a control device.
- the control device is designed to regulate an output voltage and/or an output current of the DC/DC converter.
- the control device can set the output current and/or the output voltage of the DC-DC converter according to predetermined parameters and/or setpoints.
- the control device is designed to set the output voltage of the DC-DC converter using an electrical voltage at the first output connection.
- a suitable current sensor can be provided at the output connection or at the input connection that is electrically connected to the output connection. In this way, the output voltage of the DC-DC converter can be set to correspond to the voltage conditions at the unregulated first output connection of the charging circuit.
- control device is designed to set an electrical voltage at the output of the DC-DC converter, so that a ratio of the electrical voltage at the output of the DC-DC converter to an electrical target voltage for the second part of the energy store is a predetermined ratio of an electrical voltage at the first output connection to an electrical Target voltage for the first part of the energy storage corresponds.
- the control device is designed to set the output current of the DC/DC converter using an electrical output current and/or an electrical voltage at the first output connection.
- suitable sensors for detecting the electrical current and/or the electrical voltage can be provided at the first output connection.
- the control device is designed to set an electrical output current at the output of the DC-DC converter, so that a ratio of the output current of the DC-DC converter to a target output current for the second part of the electrical energy store is a ratio of the output current at the first output connection to a target output current for the first part of the corresponds to energy storage. In this way, mutually corresponding electrical charging currents for the corresponding parts of the electrical energy store can be set at the two output connections of the charging circuit.
- the regulations described for the electrical voltages and the electrical currents at the output connections of the charging circuit can also be combined with one another in a suitable manner.
- a constant ratio of the charging voltages can primarily be regulated, with a maximum permissible difference for the ratio of the charging currents being able to be specified as a further condition.
- the charging currents can also be adjusted primarily, in which case a maximum deviation for the voltage ratios can be specified as a further boundary condition.
- FIG. 1 shows a schematic representation of a block diagram for a charging circuit for charging an electrical energy store according to one embodiment
- FIG. 1 shows a schematic representation of a block diagram of a charging circuit 1 for charging an electrical energy store 2 according to one specific embodiment.
- the charging circuit can, for example, be supplied with electrical energy from a DC voltage source, such as a charging station 3 .
- the electrical energy store 2 can in particular be divided into two parts 21 and 22 .
- the two parts 21, 22 of the electrical energy store can be electrically connected to one another via a central connection M.
- This center connection M of the energy store can be brought out as an electrical contact.
- the first part 21 of the electrical energy store 2 provides its electrical energy between a first external connection and the middle connection M.
- the second part 22 of the electrical energy store 2 provides its electrical energy between the central connection M and a second external connection.
- the full voltage of the electrical energy store 2 is present between the first external connection and the second external connection.
- the charging circuit 1 for charging the electrical energy store 2 includes an input connection 13. This input connection 13 can be connected to the DC voltage source 3 already mentioned above.
- a first output connection 11 of the charging circuit 1 can be electrically connected to the first part 21 of the electrical energy store 2 .
- a second output connection 12 of the charging circuit 1 can be connected to the connections of the second part 22 of the electrical energy store 2 .
- the first part 21 of the electrical energy store 2 is charged via the electrical energy provided at the first output terminal 11 of the charging circuit 1
- a second part 22 of the electrical energy store 2 is charged via the electrical energy provided at the second output terminal 12 of the charging circuit 1 .
- the first output terminal 11 of the charging circuit 1 is directly electrically connected to the input terminal 13 of the charging circuit 1 .
- the electrical voltage provided by the DC voltage source 3 is fully present at the first output connection 11 of the charging circuit 1 and thus at the first part 21 of the electrical energy store 2 .
- the charging circuit 1 includes a DC-DC converter 14.
- This DC-DC converter 14 is also connected to the input at its input Input terminal 13 of the charging circuit 1 connected.
- the output of the DC voltage converter 14 is electrically connected to the second output connection 12 of the charging circuit 1 and therefore also to the second part 22 of the electrical energy store 2 .
- the second part 22 of the electrical energy store 2 can be charged with a DC voltage that is provided by the DC voltage converter 14 .
- the DC voltage converter 14 converts the electrical voltage provided by the DC voltage source 3 into an electrical voltage which is suitable for charging the second part 22 of the electrical energy store 2 .
- the direct voltage source 3 thus provides an electrical direct voltage which is suitable for charging the first part 21 of the electrical energy store 2 directly.
- the DC voltage converter 14 of the charging circuit 1 can convert the electrical voltage provided by the DC voltage source 3 into a further electrical voltage which is suitable for charging the second part 22 of the electrical energy store 2 .
- the DC voltage converter 14 can be controlled by a control device 15, for example.
- the control device 15 can provide suitable control signals, for example pulse-width modulated control signals, to the DC-DC converter 14 in order to provide a desired electrical voltage at the output of the DC-DC converter 14 .
- the DC-DC converter 14 when the first part 21 and the second part 22 of the electrical energy store 2 are electrically connected to one another at a central connection M and thus a connection point of the first output connection 11 of the charging circuit 1 and a connection point of the second output connection 12 of the charging circuit 1 are also electrically connected to one another, it is necessary for the DC-DC converter 14 to provide a floating output voltage.
- a galvanic isolation can be provided in the DC-DC converter 14 between the input and output of the DC-DC converter 14 . This galvanic isolation can take place, for example, by means of a suitable transformer or the like.
- the controller 15 of the charging circuit 1 can adjust the output voltage and/or the output current of the DC/DC converter according to any suitable strategy.
- a fixed transformation ratio for example a transformation ratio of 1:1, can be provided in the DC-DC converter 14 . Accordingly, the output voltage of the DC voltage converter 14 varies analogously to the electrical voltage that is provided by the DC voltage source 3 and is therefore present at the first output connection 11 of the charging circuit 1 .
- the output voltage of the DC-DC converter 14 can be regulated according to any other strategy.
- a ratio between the output voltage of the DC-DC converter and the nominal voltage of the second part 22 of the electrical energy store 2 corresponds to a ratio between the electrical voltage at the first output connection 11 of the charging circuit 1 (corresponding to the electrical voltage from the DC voltage source 3) and the nominal voltage for the first part 21 of the electrical energy store 2 corresponds.
- the DC-DC converter 14 can be controlled in such a way that an electrical output current of the DC-DC converter corresponds to the electrical current with which the first part 21 of the electrical energy store is charged.
- any other fixed predetermined ratios between the charging current for the first part 21 of the electrical energy store 2 and the charging current for the second part 22 of the electrical energy store 2 are possible.
- the specifications for the charging voltages and the charging currents can also be combined with one another in any way.
- a fixed ratio for the charging currents in the first part 21 and the second part 22 of the electrical energy store 2 can be specified as the primary specification.
- maximum deviations for the electrical voltages provided or the ratios between the voltages provided and the nominal voltages of the respective parts 21, 22 of the electrical energy store 2 can be specified.
- fixed voltages or voltage ratios in relation to the nominal voltages of the respective parts 21, 22 of the electrical energy store can be specified, with a maximum deviation of the electrical currents or the ratio of the electrical currents to one another being able to be specified as secondary framework conditions.
- any other additional specifications for setting the electrical voltage and/or the electrical current at the output of the DC voltage converter 14 are also possible.
- FIG. 2 shows a schematic representation of a flow chart of a method for charging an electrical energy store according to one specific embodiment.
- the method can include any steps as have already been described above in connection with the device 1 for charging the electrical energy store 2 .
- the previously described device 1 for charging the electrical energy store 2 can also have any components that are suitable for carrying out the method steps described below.
- step S1 an input connection 13 of a charging circuit 1 is connected directly to a first part 21 of an electrical energy store 2 .
- step S2 an electrical voltage from the input connection 13 of the charging circuit 1 is converted into a further electrical voltage and in step S3 the further electrical voltage is provided at a second part 22 of the electrical energy storage device 2 .
- the present invention relates to charging an electrical energy store, in particular a traction battery of an electric vehicle, the electrical energy store having a nominal voltage that is higher than an electrical voltage provided for charging.
- the electrical energy store having a nominal voltage that is higher than an electrical voltage provided for charging.
- part of the electrical energy store is charged directly with the electrical voltage provided, and another part of the electrical energy store is charged using an electrical voltage that is converted by a DC-DC converter from the voltage provided for charging. In this way, only part of the energy required for charging the electrical energy store has to be converted by means of a voltage converter.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020215598.4A DE102020215598A1 (en) | 2020-12-10 | 2020-12-10 | Charging circuit and method for charging an electrical energy store and electric vehicle |
PCT/EP2021/082447 WO2022122359A1 (en) | 2020-12-10 | 2021-11-22 | Charging circuit and method for charging an electrical energy store, and electric vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4260427A1 true EP4260427A1 (en) | 2023-10-18 |
Family
ID=78820630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21819100.5A Pending EP4260427A1 (en) | 2020-12-10 | 2021-11-22 | Charging circuit and method for charging an electrical energy store, and electric vehicle |
Country Status (6)
Country | Link |
---|---|
US (1) | US20240308364A1 (en) |
EP (1) | EP4260427A1 (en) |
KR (1) | KR20230118641A (en) |
CN (1) | CN116830414A (en) |
DE (1) | DE102020215598A1 (en) |
WO (1) | WO2022122359A1 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019041497A (en) * | 2017-08-25 | 2019-03-14 | 住友電気工業株式会社 | Power source management device |
DE102017123184A1 (en) | 2017-10-05 | 2019-04-11 | Lisa Dräxlmaier GmbH | Apparatus and method for charging an electrical energy storage system |
-
2020
- 2020-12-10 DE DE102020215598.4A patent/DE102020215598A1/en active Pending
-
2021
- 2021-11-22 KR KR1020237023335A patent/KR20230118641A/en unknown
- 2021-11-22 WO PCT/EP2021/082447 patent/WO2022122359A1/en active Application Filing
- 2021-11-22 US US18/262,353 patent/US20240308364A1/en active Pending
- 2021-11-22 EP EP21819100.5A patent/EP4260427A1/en active Pending
- 2021-11-22 CN CN202180093421.1A patent/CN116830414A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
KR20230118641A (en) | 2023-08-11 |
WO2022122359A1 (en) | 2022-06-16 |
US20240308364A1 (en) | 2024-09-19 |
CN116830414A (en) | 2023-09-29 |
DE102020215598A1 (en) | 2022-06-15 |
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